Improvement in pumps



G- G. GROVE.

Pump'.

Patented May 27, 1.879.

lllllllllllk ATToR'maYs4 UNITED STATES PATENT OEEIGE.

CASSIS G. GROVE, OF MOUNT PLEASANT, MICHIGAN.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 215,737, dated May 27,1879; application filed May 3, 1879.

To all. whom it may concern:

Be it known that I, GAssIUs G. GROVE, of Mount Pleasant, in the countyof Isabella and State of Michigan, have invented certain new and usefulImprovements in Pumps and l do hereby declare that the following is afull, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification, in which- Figure l represents in full lines a verticallongitudinal section of my improved. pump, the dotted linesrepresenting` a second pump of the same construction to be used inconnection with first when a double working pump is desired, thedischarge-pipes of both pumps in the latter case being connected, asshown'. Fig. 2 is a cross-section of the cylinder and piston, taken onthe line .r y of Fig. l.

A is the pump-cylinder, open at the bottom, and having cast theron asuitable base for its support in the well. The top of the cylinder isperforated for the passage of the pistonrod D. On one side of the upperpart of the cylinder is cast the discharge-neck F, the upper part ofwhich forms the seat G for the check-valve H; TheV neck G is braced tothe cylinder by the web M, which also forms a base for the lower end ofthe discharge-pipe L, and for the spider I, which forms the guide forthe check-valve stem K, the whole protected by the cap or cover N, whichis in one piece, and is attached to the upper part of the discharge-neckF by bolts or otherwise.

Bis the hollow piston, cast withaspider in its interior, for itsattachment to the piston-rod D. The exterior of the piston is grooved,as shown, to form a water-packing. The upper part of the piston hasaccncave valve-seat, b, for the valve C, which surrounds and movesfreely upon the piston-rod D, its motion being limited by the pin orstop E, and its lower face being convex to fit the concave valve-seat.

The pump may be of any size required, and the piston-rod may bereciprocated by hand, steam, or other power, as desired.

The pump being submerged in the water of the well, upon the descent ofthe piston the valve C rises, permitting that part ofthe cylinder aboveit to become lled with water. As the piston commences to ascend thevalve C closes, and the water is forced through the discharge-neck Fandvalve H into the discharge-pipe L. As soon as the piston again commencesits descent the check valve H closes, thereby retaining the water leftin the discharge-pipe.

The great advantages of my improved pump are its cheapness, compactness,and durability, the cylinder, piston, and valves bein g of metal, and asthe pump is submcrgedin use no packing is required. rlhe cylinder, itsbase, discharge-neck, and web M are easily cast in one piece.

Having thus described my' invention, what I claim las new, and desire tosecure by Letters Patent, is-

l. In combination with the cylinder A, having the top, thedischarge-neck F, and web -M cast in one piece therewith, thedischarge-pipe L and spider I, as and for the purpose set forth.

2. The cylinder A, having discharge-neck F and web M, the grooved hollowpiston B, with concave valve-seat b, and convex-faced valve C, movingfreely on piston-rod D, in combination with the discharge-pipe L andcheck-valve H, substantially as described, and for the purposes setforth.

In testimony that I clailn the foregoing as my own I affix my signaturein presence of two witnesses.

CASSIUS G. GROVE.

Witnesses:

B. T. HANLEY, E. HAYWOOD.

